<!DOCTYPE html>
<html>
    <head>
        <meta charset='utf-8'>
        <meta name="viewport" content="width=device-width, initial-scale=1" />
        <script src="../lib/esl.js"></script>
        <script src="../lib/config.js"></script>
        <script src="../lib/jquery.min.js"></script>
    </head>
    <body>
        <style>
            html, body, #main {
                width: 100%;
                height: 100%;
                margin: 0;
                padding: 0;
            }
        </style>
        <div id="main"></div>
        <script>

            require([
                'echarts',
                'ecStat'
            ], function (echarts, ecStat) {

                var chart = echarts.init(document.getElementById('main'));

                window.onresize = function () {
                    chart.resize();
                };

                $.getJSON('../data/clustering_dataset2.json')
                .done(function (data) {

                    echarts.registerTransform(ecStat.transform.clustering);
                    var CLUSTER_COUNT = 6;
                    var DIENSIION_CLUSTER_INDEX = 2;
                    var COLOR_ALL = [
                        '#37A2DA', '#e06343', '#37a354', '#b55dba', '#b5bd48', '#8378EA', '#96BFFF'
                    ];
                    var pieces = [];
                    for (var i = 0; i < CLUSTER_COUNT; i++) {
                        pieces.push({
                            value: i,
                            label: 'cluster ' + i,
                            color: COLOR_ALL[i]
                        });
                    }

                    var option = {
                        dataset: [{
                            source: data
                        }, {
                            transform: {
                                type: 'ecStat:clustering',
                                print: true,
                                config: {
                                    clusterCount: CLUSTER_COUNT,
                                    outputType: 'single',
                                    outputClusterIndexDimension: DIENSIION_CLUSTER_INDEX
                                }
                            }
                        }],
                        tooltip: {
                            position: 'top'
                        },
                        visualMap: {
                            type: 'piecewise',
                            top: 'middle',
                            min: 0,
                            max: CLUSTER_COUNT,
                            left: 10,
                            splitNumber: CLUSTER_COUNT,
                            dimension: DIENSIION_CLUSTER_INDEX,
                            pieces: pieces
                        },
                        grid: {
                            left: 120
                        },
                        xAxis: {
                        },
                        yAxis: {
                        },
                        series: {
                            type: 'scatter',
                            encode: { tooltip: [0, 1] },
                            symbolSize: 15,
                            itemStyle: {
                                borderColor: '#555'
                            },
                            datasetIndex: 1
                        }
                    };

                    chart.setOption(option);

                });
            });
        </script>
    </body>
</html>